All the material is organised and a considerable part of it is also catalogued, so it can be found in the JYKDOK database. A portion of the older materials has been catalogued only in the card index. VIOLA is the Finnish national discography and national bibliography of sheet music.

The protective systems of the collections necessitate certain limitations on use. The Depository Collection is located in the closed stacks from where it is delivered for reading room use on request. Special permission is required to take the material out of the Library for official or departmental use.